African ancestry

After hundreds or even thousands of generations, both alleles are still common in those of African ancestry. How would you explain this? 2.The worldwide distribution of the sickle cell gene matches very closely to the worldwide distribution of malaria (Figure 7). What is the significance of these distributions? Distribution of MalariaDescience Ladouble8Distribution of Sickle CellIncrease in PrevalenceFigure 7: Distributionution of Malaria ( top ) and sickle celltrait ( bottom )..

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